1254343542553 has 8 divisors (see below), whose sum is σ = 1321177197600. Its totient is φ = 1187591444928.

The previous prime is 1254343542533. The next prime is 1254343542659. The reversal of 1254343542553 is 3552453434521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1254343542553 - 2⁵ = 1254343542521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254343542533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20357776 + ... + 20419297.

It is an arithmetic number, because the mean of its divisors is an integer number (165147149700).

Almost surely, 2^{1254343542553} is an apocalyptic number.

It is an amenable number.

1254343542553 is a deficient number, since it is larger than the sum of its proper divisors (66833655047).

1254343542553 is a wasteful number, since it uses less digits than its factorization.

1254343542553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40778711.

The product of its digits is 4320000, while the sum is 46.

The spelling of 1254343542553 in words is "one trillion, two hundred fifty-four billion, three hundred forty-three million, five hundred forty-two thousand, five hundred fifty-three".